In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: NANJING -- Another human H7N9 case has been found in east China's Jiangsu Province, the provincial health department confirmed on January 31. The patient, a 75-year-old woman from the provincial capital of Nanjing, is in a critical condition. The case brings the number of infections in the province to eight this year. H7N9 has killed 19 in China this year, and the total number of human infections reached 96 on January 26, according to the   Chinese Center for Disease Control and Prevention. With bird flu cases increasing on a daily basis, public concern over people-to-people transmission during Spring Festival is growing. Li Lanjuan, researcher at the Chinese Academy of Engineering and a specialist in H7N9 prevention, said so far there have not been any cases in which one person transmits the flu to another, and the latter transmits the virus to a third person. Her team has identified H7N9 virus mutations this year, but the  _ are not large-scale. "Inter-human transmission is very unlikely," said Li, who added that the virus has not evolved to be extensively drug resistant. The National Health and Family Planning Commission said on Wednesday live poultry markets should close if any case of H7N9 avian flu is detected. The southern metropolis of Shenzhen has closed all live poultry   markets until February 13 for a thorough cleaning. The city near Hong Kong has reported 14 human H7N9 cases since December 18. Live poultry trading has been halted in Hangzhou, Ningbo and Jinhua cities in Zhejiang, which reported the largest number of human H7N9 cases. China has stepped up   research for an H7N9 vaccine in the face of the increasing threat from the virus. Beijing's Snovac Hotech Ltd.,which developed the A/H1N1 and H5N1 vaccines, said in a press release on Wednesday that it has completed preclinical   studies of an H7N9 vaccine arid prepared several types for clinical testing. The company has submitted an application to the China Food and Drug Administration to start clinical trials. 
 Answer: It once developed the A/H1N1 and H5N1 vaccines.
Which of the following is true about Beijing's Sinovac Biotech Ltd?

Article: Don't invite crime--take basic, sensible precautions. Your house and possession are valuable and must be properly protected. When you buy a lock, you buy time --- and this is the one thing a burglar can't afford. Most thieves are casual opportunists to whom the best deterrents  are delay and noise which could mean discovery. When you leave it, lock it! First of all, fit security locks to all doors and windows and a safety chain on the front door. Secondly, use them! If you have any ladders or tools, don't leave them lying about in the garden, lock them away. "Safe" or "secret" places for keys and valuables are not reliable - nine times out of ten, they are the first place a thief will look. When you move house... When you move into a new home even if it is fitted with security locks, change them. You don't know who else may have keys. Never let strangers into your house. An official - looking cap is not enough, ask for proof of identity and look at it carefully - if you are still not satisfied, don't let the person in. Valuables need special protection Valuables should really be given special protection - preferably by leaving them with your bank. A small security safe works too, but not to the most determined burglar. It is also important to keep an up - to - date list of valuables and their descriptions. In the case of fine art, paintings, or jewelry, color photographs can sometimes be of assistance to the police if you are unfortunate enough to have them stolen. Enter the details on the back of the pictures. But don't keep such documents in your house, keep them at the hank or with your insurance company. Going on holiday? Don't talk about your holidays and future plans loudly in public. Do remember to cancel the milk and newspapers and also to draw curtains back. Operate a "Good Neighbor" program to ensure that mail is taken in, the house is checked regularly and that lights are put on. Call at your local police station and tell them you are going away. Make sure that they know how to contact you in case of trouble. Don't leave cash or valuables in the house--take them with you or put them in the bank. 
 Answer: You should put them in the safe place and lock the door.
How should you deal with your ladders or tools?

Article: prefix = st1 /Britainis facing a sharp rise in its rat population as growing numbers of people leave fast food scraps in the street , an environment group warned . Keep Britain Tidy said the rodents  were stopping their traditional hunts underground and were roaming the streets ,tempted by discarded burgers ,pizzas and crisps. "The rat population is on the rise and soon it'll be as common to see a rodent on our street as it is to see a dog or a cat," said group Director ,Sue Nelson. The practice of dumping fast food litter and scraps on the street rather than in the trash-with young men the worst offenders-was behind the rise. According to the National Rodent Survey in 2005, Britain's rat population has grown by nearly one quarter since 2000 and is now estimated at 60 million , two million more than the human population. On average a rat can give birth every 24--28 days and just a single pair of rats can produce a colony of 2,000 a year. Around 200 people a year get Weil's Disease----an infection which can lead to liver or kidney  failure and eventually death and which is arrived in rat's waste. To highlight the issue , Keep Britain Tidy launched a cinema ad entitled "How close do you want them to get?" The advertisement gave a shocking image of a young woman sleeping in a bed of rots, echoing the nightmare scene from James Herbert's classic horror tale The Rats, in which mutant rodents begin to prey on humans. 
 Answer: Under the ground.

Where did the rodents use to search for food?

